Get those old banknotes exchanged as soon as possible. The Bangko Sentral ng Pilipinas has announced that beginning January 1, 2016, those old banknotes can’t be used for daily transactions anymore. You can however exchanged them for the new banknote series at any bank and Bangko Sentral ng Pilipinas offices nationwide — you have the whole year of 2016 to do this. Take note that by January 1, 2017, the old banknote series will have no more monetary value. These are old banknotes that you need to exchange for the new ones. If you still have this in your possession then go to your nearest bank asap.